IDZ Digital Java Developer Interview Questions and Answers

Coding related to java collections

Q1. Familiar with Design patterns ?explain few
Ans. 
Design patterns are reusable solutions to common problems in software design.
• Design patterns help in creating maintainable and scalable code.

• Examples of design patterns include Singleton, Factory, Observer, and Strategy.

• Singleton pattern ensures a class has only one instance and provides a global point of access to it.

• Factory pattern creates objects without specifying the exact class of object that will be created.

• Obse...read more
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Q2. What is Mutilthreading,explain with examples
Ans. 
Multithreading is the ability of a CPU to execute multiple threads concurrently, allowing for improved performance and responsiveness.
• Multithreading allows multiple tasks to be executed simultaneously on a single CPU.

• Each thread has its own stack and program counter, but shares the same memory space.

• Examples include running multiple processes in a web server, handling user input while performing background tasks, and p
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There were questions of basic aptitude

Q1. Introduce yourself
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Q2. About my projects
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Q3. What is Radix sort
Ans. 
Radix sort is a non-comparative sorting algorithm that sorts integers by processing individual digits.
• Radix sort works by sorting numbers based on each digit's value, starting from the least significant digit to the most significant digit.

• It can be implemented using counting sort or bucket sort as a subroutine.

• Radix sort is efficient for sorting integers with a fixed number of digits, like phone numbers or social secur
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Q1. Some C++ 14/17 questions and OOPs concepts
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Q2. DSA questions based for basic game logics.
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Q1. Advanced OOPs and C++ questions
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Q2. DSA coding questions based on Stacks and Linked list
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Q1. Called me to Noida for a F2F HR round. I wasn’t given any Travel allowance. CTC negotiation was brutal. They were not willing to give me even a 5% hike on my previous salary.The HR and the Team said they’d...read more
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Q2. A month passed by. Sometimes they’d say the technical team who took your interview wasn’t available so that the CTC discussion could be further done. And somedays they’d just delay by saying we’d get back ...read more
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Q3. After a month of wasting my time. The HR finally called and said they rejected me based on the CTC. And are not even willing to negotiate because of my not so well performance in the technical rounds.
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One hour aptitude test based on the mathematics ,logical reasoning.

Q1. One basic question on the language you know and one SQL is asked
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Q2. SQL query questions
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Q1. 4 Coding question to be solve live
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